Bag-turning machine



1,527,240 F. J. WAGNER BAG TURNING MACHINE Filed Oct. 15, 1920 3 Sheets-Sheet 1 Feb. 24, 1925.

Feb. 24. |925. I 1,527,240

Y F. J. WAGNER BAG TURNING MACHINE Filed Oct. l5, 1920 5 Sheets-Sheet 2 Wi" i' Patented Feb. 24, 1925.

FRANK J. WAGNER, OF YONKERS, NEX/V YORK.

BAG-TURNING IVIAGHNE.

Application filed October 15` 1920.

To all whom may concern.'

Be it known that I, FRANK J. VAGNEP., a citizen of the United States, residing' at Yonkers, in the county of l/Vestchester, State of New York, have invented certain new and useful Improvements in Bag-Turning Machines, of which the following', taken in connection with the accompanying drawings, is a specification.

My invention relates to machines for turning or reversing bags and sacks, and its object is the construction of a machine for this purpose that will turn or reverse bags and sacks, more particularly of the larger sizes, efficiently and rapidly.

It is to be understood that the construction shown and described is an illustrative embodiment merely, and that variations and modifications may be made that will, nevertheless, be within the scope of my invention as defined by the claims hereto appended.

Referring to the drawings, Figure l is a plan View of my machine, and Figure 2 is a side elevation thereof, the support-ing parts, however, not being shown. Figure 3 is an enlarged detail of the mechanism lfor holding and opening the bag` whereby it may slip easily on to the bag frame. Figure l is a transverse section on the lne 1 -ll of Figure l, the bag frame being omitted for the sake of clearness. F igure 5 is an enlarged detail view showing the mechanisin whereby a bag carried by the belt conveyor may pass the bag frame. Figure 6 is a side elevation showing in enlarged detail the plunger and mechanism for operating the plunger. Figure 7 is a plan view enlarged showing in detail the plunger carrying a bag and the mechanism for operating the plunger in position preparatory to the turning movement. Figurel 8 is a plan view enlarged showing in detail the bagturning mechanism at the completion of the operation of turning a bag.

Support for the operating parts is supplied by a main frame l, which in turn may be supported by suitable standards 2. Power may be imparted to the machine through any convenient means such as the pulley 3 mounted on the shaft ll, which also carries the loose pulley 5 to which the belt may be shifted in the usual manner for stopping the machine. A belt conveyor for Serial No. 417,276.

causing the necessary travel of bags to be turned may consist of the endless belt travelling continuously in the direction of the arrow A on the pulleys T and 8, the former being mounted on the shaft t) and the latter on the driven shaft l0. The shaft 9 may, if desired, be mounted in bearing blocks ll, mounted to slide `n the guides L). and may be set in any desired position in the guides by turning the bolts lf3 threaded in the frame 13a, and bearing against the blocks ll against the tension of the conveyor belt. Adjustment to take care of ex,- cessive slackness or tautness of the conveyor belt is thus made possible.

My construction as shown in the drawings involves the employment of a bag frame 14; over which is turned the bag and a plunger l5 having relative movement with respect to the bag frame. The. plunger is preferably framework structure as shown in Figures l, 2 and 3. The bag frame may take the form of a member having approximately the shape of the block letter il, and preferably is stationary with respect to the motion of the conveyor having, however a pivotal connection whereby it may be swun or tilted upwardly from the path of a bag travelling on the conveyor, as will be hereinafter further explained.

Any suitable mechanism may be. supplied for actuating' the plunger; for instance, it may be given a motion the reverse of the travel of the conveyor belt which is indicated by the arrow (Figure To secure this reverse action. it ma.l be mounted on shafts 16 and 17, which. in turn` are mounted on flanged wheels itl. The flaiige wheels operate between rails 19. so that the Yplunger at all times remains in substantial parallelism with the travel of the conveyor, The travel of the plunger may be een lled in any convenient manner such as by iifcedhf connecting` the ends of the shaft 'lf3 and l? through the medium of members QG, with the outer stretches of endless belts cai" ried by the loose pulleys Q2. 'fill studs 23 and when projections 22% ou the moving conveyor engage Yhe studs 2B. as will be hereinafter explained, a reverse inotion, that is, ainotion of the plunger in the direction of the'bag frame is brought about.'

ie innerstretches of the belts Q1 are supplied with The return motion of the plunger may be brought about in any convenient manner such as by means of the studs 24E, proyectinguifroni. theirconveyor belt which, as. they`4 5 travelialong, butt-'against theshaft 17, the..V

be provided for holding the mouth of the bag distended. Preferably the bag holder is,` such that-the L bagdoesfnot become dis- ,tended1untilfatter it is evenly .inserted 15, thereon.` Such a bag `holder is shown infy .fFig. l and apdetailthereot iii Fig. 3. Ii: f-inayg consist o t-two Wings 25, mounted on a ,f xplate 9.6,.niounted on and extending trans- :;veiselyV of the conveyor. 2Q pivotedby means of springhinges 27,- which normallyghold the Wings in a perpendicular position, nainely,.the positionindicated by -a thefdotted-:lines in Fig. 3,

To facilitate' the insertion ot a bag on the 5holder, it is desirable that aty the tinie ot rinseiition thef'vvings be in a horizontal position, which object-maybe secured by providing spring catchesV 2S .which are .strong 1 enough tohold the wings horizontally. as 3l??rilgfainst;the tension oit-fthe spring hinges 2T. At a convenient point on the trame ot the machine in advance ot the inout-h oi the f-,.,npliinger,.-means areprovided'such as. the g-pG-ains ,-29 .for Nreleasing the wings ii'onithe li'ziyspring catches, whereuponl` they. a ssuine a .inpeiipendicular position and .the inouth oiv the bag'isfdistended,suiiiciently to. permit the plunger 115 toenter: the niouth'oif the bag,4

@whereby with continued motion otthe car. A,I-.frier it will slip easily over the plunger.

the plane of motion ot' thewbag holder is iiiy'substantially the #saine plane asithat ol" thegfbag. fra-me 14:, it is necessarytliat thev bag frame befremoved out oi. the path ot -.tia;velliiig 'bag as the latter,v advances or r .inoves in the direction `oi: the plunger.

Thisobject may be effected by rigidly at A=;.taching the-bag frame te depending inem yibers 30, SOfWhich iii-tiiin are` pivoted at 3lr tostandards 32, 32 erected on the machine :.gfiaineji Whenl the frame is tilted upwardly.'

there issufcient space for the bag to clear as itipassesbeneath.

sitioni (as. shown in Figure 5) inay consist ot -piveights 331carried by arnis itrigidlyncoin if-iiected With-(the depending members 30.v

. ,.i'lhefV result thus fiar is normally to keep theV (5L-bag traine inelevated position` how-ff scribed, .l1.provide` a tripping mechanism oit The wings are Y Means `for tiltiiigthe traine to upward po: f

iaction ofgtheigplunger Aas hereinbe'fore .de-vi such character that except during the pass sage of a bag frame it is maintained in lowered position as shown in Figure 2. The tripping mechanismniayoeonsist of the trip 35 pivoted to'- the frame 36, and having tension spring connection at the point 3T with the Vfra-ine asshoWn. Also inounted on the :traine is a bell crank lever having the longer V.arin 384 provided with a bevelled engaging end as shovvn and the shorter arin 39, and being' pivoted'at 40. A link 4l connects one` oi the arins 34C with the longer arm 91S ot the bell crank` lever.

To operate 'the Atiip `and raise the bail' frame, I provide theplate 26 with'adepending ear 42, adjusted to strike Ythe trip P35 when the latter is setand release tliewbell crank lever, whereby the bag trainer is tilted by `the action of the weights `lYhcir the bag-liolder has passed `beneath the i pivotal mounting of the bag traine, the lattorminay beagaiii lowered,whichniay be eil'ected by providing the conveyorwith stud Llzattixed thereto in anyconvenient manner, such as be being made integral WithA the crossbar i4 carried by the conveyor.` `As the stud Ail?) strikes the short arm. 39 `otthe'bell crank lever, the bag iraine isi-again lowered and `the `trip set for the next following` i bag `holder oic which there inay be a number.

.As `the bag holder is relieved ob `its Vbag bythe action of the ipliuiiger, asihereinaitcr described, the wings-remain up'wairdlv ei;-

tended' aiidinustbe closed downfbeiore the bag holder `again ,comes into operation. To

accomplish this suitable. .cams 45 may be iuterposed-in the path lof the. lugs hlGo-l thi` extendedwinga those` cams being mounted at any suitablelocation in adivaneevot the` position at which a bag to beengaged. As, in the particular construction shown,v

such t'or example as on the inclined iplaiforni 4t? which is supported by standards lil, These cams areshaped to engage the lugs lo and thus to depress the" extended wingsuntil vthey-are engaged by the spring catches.

whereby they are heldvluntil they are again Vcaused to be extended lip-abutting against connecting the blocks-48 withflugs 5l, 31

afiixed to the traine.

To maintain `dependa ble engagement `bc tween `the studs- 23 yaiid1`23, it iafadvisablc to` provideg-the;*guides 52faiinixed to the inachineifranie. i `The belts 2lin'iaytcarry hooks 53 which:engage'withgthe guides to pre vent Vlateral movement of the belts andwith hooks 54 which engage theiundensideot' the Aguide 52@ andv thusY prevent fupward inovcinent of. the belts 2l.

An inclined. table 4:7 may bey erected on the lill ' Wings as shown iii-Figure*1.V As'the conveyer travels in.` the `li-'ifectionof the arrow, the lug 4:2 strikes the trip causing lthe Weight 33, to fall and th'usftiflting thebag frame to the approximate position -shoivnin Figure 5, whereby suliicientcleafance i's-eflected to permit the `passageo'"thebagben'eath the bagv frame. As the conveyer continues `the projecting lugs 46 on the Wings"strike the cams 29, causing` the Wings to be released from the springrv catches whereupon lthey rotateby the action of the1springh-inges -on which' they'are pivotedf to theposition shown in FigureV 6, thus holding themoiith of the bag distelide'd. 'As the bag continuesit is carried Eon tothe plunger, the plunger being stationary at theV commencement of this motion.v lllhen,` hoWever,v the'bag has been carried nea'rlytlie full Yleiifgtf'lc oit the'plunger, the lugs'23engage-With the lugs QSLand at approxi-mately the saine time the lug/.1.53 sets the. trip by raisingfl the ifvelights 33 and -permitting the bag lframe to -iia-ll'to `its normal position. A s the lugs 23 engageniilh the lugs Q3 a forward motion *o'tftliefpliinger in the directionl ofthe; arrow- BA is brought about and the ba vis turned 1on the-bagtrame '15.4 as'shotvn in ignre V'81: I'mmedi-ateliT the pl'ungerhas rea'cl'ie'clth'e 'limiter its forward motioin. the lugs 23 lare "disengaged fronn the lugs 23 as the' -former pass 4down 'over' the pulley. Thereupon Vtlfe'lugs Qll'engag'e with the shaft .17 on which the plunger is mounted,' and `the. plunger is tcarried back to its normal position (tlratis,' the position shoivniin Figures 'l andQ) carrying ivith it the bag. The dimensionsof the plu-nger are such that 'it 'grasps Ithe bag-somewhat closely, and the' latter is therefireprevented 'from extent to prevent fittfromtraveling `ivith the plunger as the `plunger returns; As thebag;

is stripped "oll'the-bag frame-'14, it-falls on` other bag' andgo tliroi-rglr the's'alnie fcycle of operation. As shown in Figure', for example, additional bagholders 56 may be employed', the number Y depending upon the length of the conveyer. Of course, with each bag holder it is necessary toV employ lugs and 4parts to perform the operations above described.

I claim:

l. In a bagvturning machine a belt con-1'- rection opposite to that of said bag frame and proportioned to encompass the same, counter Weights on said bag' lrameadapted normally to keep the same in elevated position, a trip for maintainingfsaid bag` framein lon'ered position in opposition to said' counter WeightsA` a lug on said conveyer adapted to release said trip', cams on the machine frame adapted to elevate said Win-gs. ay lire' on saidvconveyer adapted to set said trip, lugs on said endless belt. lugs 'on said" eonveyer adapted'to engage the' saine, lugs on said conveye'r adapted to engage said plunger` cams on the machine frame ladapted to depress said'vingzs, spring catches cooperating' with said Wings to hold them in depressed position. and spring connections between said Wings and said conveyer adapted to holdsaid Wings inV elevated position when theY same have been-released from said spring' catches.

2. 4ln a bag; turning machine, 'a conveyor, an endless belt mounted to travel in parallelism with said conveyor, a bag' holder carried by said conveyer. a ban` Frame` a plunger slidably mounted over said conveyei and havin;r connection with the `outer stretch of said endless belt. lugs `on the inner stretch of said endless belt and lugs on said conveyer positioned to engage the last uien-- tioned lugs whereby the said plunger is l'caused to travel in a direction `opposite to the direction otravel of said conveyer.

In a bag turning; machine. a belt 'convever, a bag' holder carried by said conveyer, a bag; frame projecting from a depending pirotally mounted bracket. a iilifinfl'er mounted to slide in the plane of the bag frame and in the plane of movement of the bag holder, said plinigrer being provided with an elongated mouth adapted to encompass said bag iframe and being open at the bottom` an endless belt mounted to 'travel in parallelism With said conveyer. the outer stretch of said beltbeing' connected to said plunger. lugs projecting` trom the inner stretch of said belt. lugs on the conveyer adapted vto engage therewith and lugson the conveyer adapted to engrane. Said plunger.

4. lnA a bag turning machine, a eOnVeyer, an endless belt mounted to travel in parallel- Cil ism with said conveyer, a plunge-r slidably mounted to travel also in parallelism With said conveyer and having connection With the outer stretch of said belt whereby the plunger is adapted to lbe moved in a direction opposite to the motion of said conveyer ywhen connection is established between said conveyer and the inner stretch of said belt.

5. In a bag turning machine a conveyer, an endless belt mounted to travel in parallelism With said conveyer, a plunger slidably mounted to travel also in parallelism with said conveyer, and having connection with the outer stretch ot' said belt, lugs on said conveyer adapted to establish connection with the inner stretch of said belt and lugs on said conveyer adapted to establish connection With said plunger whereby the plunger is adapted to travel to and fro when the conveyer is in motion.

6. In a bag turning` machine, a conveyer, an endless belt mounted to travel in parallelism with said conveyer and extending beyond the terminal of said conveyer, a plunger slidably mounted to travel also in parale lelism With said conveyer, and having connection with the outer stretch ot said endless belt, members carried by said conveyer adapted to engage the inner stretch of said endless belt as the conveyer moves and to be released therefrom as they reach the terminal of said conveyer, members mounted on said conveyer adapted to engage said plunger and to be released therefrom as they reach the terminal ot' said conveyer, whereby a to and 'tro motion is given to the plunger as the conveyer moves.'

7. In a bag turning machine, a conveyer, a bag holder comprising a pair of oppositely disposed Wings, means Jfor yieldingly` retaining said Wings in depressed position on said conveyer, means for raising said Wings to a position perpendicular to said conveyer when released from. said retaining means, and means for releasing said Wings from said retaining means When the said wings pass a predetermined point as the conveyer moves.

8. In a bag turning machine, a conveyer, an endless belt mounted to travel in parallelism with said conveyer, a plunger connected to said belt, connections on said conveyer adapted to cooperate with said plunger and cause it to travel alternately in 'opposite directions through a stroke of predetermined length.

9. In a bag turning machine, a conveyer,

an endless belt mounted to travel in parallel-v ism with said conveyer, a plunger connected to said belt, connections on said conveyerV veycr, and connections on said cqnveyer adapted to engage said plunger and cause it to travel in the direction of the motion ot said conveyer, both ot said connections being adapted to be released when they reach the terminal of the conveyer.

10. In a bag turning machine, a conveyer, an endless belt mounted to travel in parallelism with said conveyer, a plunger connected to said belt, connections on said conveyer adapted to engage raid belt and thereby cause said plunger to travel in a direction opposite to that of the travel ot said conveyer, and connections on said conveyer adapted to engage said plunger `and cause it to travel in the direction of the motion ot said conveyer, both of said connections being adapted io be released at pre-determined points in the travel ot the said conveyer.

11. In a bag turning machine, a conveyor, an endless belt mounted to travel in parallelism with said conveyer, a bag holder, a bag frame, a plunger connected to said belt, connections on said conveyer adapted to engage said belt and thereby cause said plunger to travel in a direction opposite to that of the travel oi said conveyer, and connections on said conveyer adapted to engage said plunger and cause it to travel in the direction of travel of said conveyer, said connections being adapted' to be released at predetermined points in the travel of said conveyer. n

l2. In a bag turning machine, a belt conveyer `carrying bag holding means, a plunger mounted to reciprocate in parallelism With said conveyer, a counter Weighted pivotally mounted bag -frame oppositely `disposed With respect Vto said plunger, and adapted to be encompassed thereby when the plunger and bag frame are in cooperative relation.

13. In a bag turning machine, a traveling conveyer, a b ag holder, a plunger, and a bag frame, said bag trame projecting from pivotally mounted depending brackets, means for normally maintaining said bag trame in tilted position, a trip adapted to maintain said bag frame'in depressed posh tion and to be released at a pre-determined point in the travel of said conveyer.

14. In a bag turning machine, a traveling conveyer, a bag trame and a plunger,means carried by said` conveyer, for causing the plunger to advance in a direction opposite the direction ot travel ot said conveyer to accomplish its working stroke, and means carried by said conveyer for causing said plunger to accomplish Vits return stroke.`

In testimony whereof, I have signed this specification.

FRANK J. WAGNER. 

